Glass Door Merchandiser

ModelRM-49

Number: RM-49Issued: 02-22-2017Revised: 02-22-2017

RM-492

3RM-49

TABLE OF CONTENTS

Page UNIT FEATURES 4

CROSS SECTION VIEWS 5

EXPLODED VIEW 6, 7

REFRIGERATION SYSTEM 8, 9

CONDENSING UNIT ASSEMBLY AND ITS COMPONENTS 10, 11

SWING DOOR ASSEMBLY AND ITS COMPONENTS 12, 13

INTERIOR LIGHTING SYSTEM 14, 15

SIGN AND FRONT GRILL ASSEMBLY 16, 17

115V./60Hz./1 PHASE ELECTRICAL WIRING DIAGRAM 18

TROUBLESHOOTING 19, 20, 21

REFRIGERATION SYSTEM 22, 23- Component description

THE REFRIGERATION CYCLE 24

RM-494

Illuminated sign

Forced-air evaporatorfor quick temperature pull down

Interior lighting LED lamp strip

NSF compliant interiorcabinet

Strong body with 2 3/8” thick walls, injected with polyurethane foamusing cyclopenthane asthe blowing agent earth friendly

UNIT FEATURES

Energy saving electronicthermostat with digitaltemperature reading

Heavy duty hinges

Double-pane Low-E glass doorfor high ambient condition

Durable PVC frame

Reinforced heavyduty shelves

Exterior cabinet made of galvanized, pre-painted steel, with baked polyester paint

Reinforced, 16 gauge, galvanized steel base

Heavy duty R-134a condensing unit with easy access for maintenance

Forced-air condenser made of copper and aluminum, resistant to rust and saline environments

5RM-49

A

A

B B

27 1/2 [699]

25 1/8 [638]

20 1/2 [521]

25 1/8 [638]

27 1/2 [699]

60 [1524]

60 [1524]

29 7/8 [759]PUERTA

29 7/8 [759]PUERTA

54 5/8 [1386]

PUERTA

60 [1524]

9 [229]

1/2 [13]

12 17/32 [319]

5/8 [16]

79 1/4 [2013]

29 21/32 [753]

2 3/8 [60] 55 1/4 [1403] 2 3/8 [60]

12 9/16 [319]

77 5/16 [1964]

CROSS SECTION VIEWSRM-49 (DIMENSIONS: INCHES [MM])

TOP VIEW

SIDE VIEW FRONT VIEW

RM-496

EX

PLO

DE

D V

IEW

14

10

15

1

6

311

12

5

2

8

7

4

13

9

3

16

7RM-49

EXPLODED VIEW Quantity Item No. Description Part No. per cooler 1 REFRIGERATION SYSTEM See pages 8 & 9

2 COMPLETE 1/2HP 115V/60HZ CONDENSING UNIT SC18G-R 1

3 COMPLETE DOOR OT-PTA-RM49 1

4 INTERIOR LIGHTING SYSTEM See pages 14 & 15

5 EXTERIOR LIGHTING SYSTEM See pages 14 & 15

6 HEADER SIGN OT-ROT-RM49 1

7 PILASTER 48” PI-5 8

8 FLAT SHELF SH-0183-LEDR-HD-FE 10

9 SHELF CLIPS CL-51-SS-E 40

10 FRONT GRILL OT-CUBREM-RM49 1

11 WATER PAN OT-TF-0383 1

12 LEVELING LEGS LG-27 8

13 RIGHT BACK GRILL SH-0258-D-G-B 1

14 LEFT BACK GRILL SH-0258-I-G-B 1

15 ENERGY SAVING ELECTRONIC THERMOSTAT CT-185-CA 1

16 MAGNETIC SWITCH EL-360-C 1

RM-498

REFRIGERATION SYSTEM

6

2

7

9

8

4

1

3

10

11

5

12

9RM-49

REFRIGERATION SYSTEM Quantity Item No. Description Part No. per cooler

1 LEFT EVAPORATOR CO-135-I 1

2 RIGHT EVAPORATOR CO-135-D 1

3 ACCUMULATOR DR-15-P 1

4 HEAT EXCHANGER EN-0122 1

5 SWITCH BRACKET OT-17197 1

6 BAFFLE OT-8564 1

7 EVAPORATOR FAN MOTOR BRACKET OT-17491 1 8 EVAPORATOR FAN MOTOR FA-41 1

9 EVAPORATOR FAN BLADE FA-2-EBM 1

10 FAN GUARD OT-2395 1

11 LIGHT SWITCH EL-303-E 1

12 PLASTIC DRAIN DR-1-P 1

RM-4910

CONDENSING UNIT ASSEMBLY AND ITS COMPONENTS

3

10

14

12

2

4

9

8

7

11

13

5

6

1

11RM-49

CONDENSING UNIT ASSEMBLY AND ITS COMPONENTS Quantity Item No. Description Part No. per cooler

1 1/2HP 115V/60HZ COMPRESSOR SC18G 1

2 OVERLOAD PROTECTOR 117U3212 EL-1945-R 1

3 RELAY 117-7441 EL-1944-R 1

4 START CAPACITOR 410 µF CAP-117U5028 1

5 ELECTRICAL BOX OT-6729 1

6 ELECTRICAL BOX COVER OT-7087 1

7 CONDENSER CO-272 1

8 CONDENSER SHROUD OT-4546 1 9 CONDENSER FAN MOTOR FA-41 1

10 CONDENSER FAN BLADE FA-11-WE 1

11 CONDENSER FAN MOTOR BRACKET FA-18 1

12 DRIER DR-404 1

13 POWER CORD EL-1265-9 1

14 MAGNETIC CONTACTOR EL-716-R 1

RM-4912

SWING DOOR ASSEMBLY AND ITS COMPONENTS

5

32

4

17

6

13RM-49

Quantity Item No. Description Part No. per cooler

1 GLASS PANE GL-677-AD-E 2

2 MAGNETIC GASKET TPE GA-424-B 2

3 UPPER HINGE ASSEMBLY HA-535-R 2

4 LOWER HINGE ASSEMBLY HA-522-R 2

5 TORSION MECHANISM HA-479 2

6 DOOR HANDLE OT-HA-676 2

7 MAGNETIC SWITCH EL-360-D 2

SWING DOOR ASSEMBLY AND ITS COMPONENTS

RM-4914

INTERIOR LIGHTING SYSTEM

2

3

1

54

3

15RM-49

INTERIOR LIGHTING SYSTEM

Quantity Item No. Description Part No. per cooler 1 53 1/4” HIGH INTENSITY FLEXIBLE LED STRIP OT-EL-170-53.25 1

2 39 3/8” LED LAMP STRIP EL-148 4

3 7 3/8” LED PROFILE COVER OT-BR-253-57-7.375 8

4 4.0 Amp. LED POWER SUPPLY OT-EL-157-T 1

5 HEADER SIGN OT-ROT-RM49 1

RM-4916

SIGN AND FRONT GRILL ASSEMBLYSign Assembly

Front Grill Assembly

8

4

2

3

11

7

9

610

11

5

1

3

17RM-49

SIGN AND FRONT GRILL ASSEMBLY

QuantityItem No. Description Part No. per cooler

1 HEADER SIGN RIGHT PROFILE PL-634-GREY-8.875 1

2 HEADER SIGN LEFT PROFILE PL-634-GREY-8.875 1

3 HEADER SIGN CORNER A PL-632-A 2

4 HEADER SIGN CORNER B PL-633-A 1

5 HEADER SIGN CORNER D PL-633-B 1 6 HEADER SIGN PLASTIC ROT-0049 1

7 HEADER SIGN LOWER METAL SHEET OT-18196 1

8 HEADER SIGN UPPER METAL SHEET OT-18197 1

9 HEADER SIGN LOWER HORIZONTAL REINFORCEMENT OT-18198 1

10 HEADER SIGN UPPER HORIZONTAL REINFORCEMENT OT-18661 1

11 HEADER SIGN REINFORCEMENT OT-19473 2

Sign Assembly

Front Grill Assembly QuantityItem No. Description Part No. per cooler

1 FRONT GRILL RIGHT PROFILE PL-634-GREY-12.375 1

2 FRONT GRILL LEFT PROFILE PL-634-GREY-12.375 1

3 FRONT GRILL CORNER A PL-632-A 1

4 FRONT GRILL CORNER C PL-632-B 1

5 FRONT GRILL CORNER B PL-633-A 1 6 FRONT GRILL CORNER D PL-633-B 1

7 FRONT GRILL REINFORCEMENT OT-18002 2

8 FRONT GRILL REINFORCEMENT OT-18183 2

9 FRONT GRILL OT-18195 1

10 FRONT GRILL REINFORCEMENT OT-18286 2

11 FRONT GRILL REINFORCEMENT OT-18662 2

RM-4918

115V./60 Hz./1 PHASE ELECTRICAL WIRING DIAGRAM

19RM-49

PROBLEM POSSIBLE CAUSE SOLUTION

COMPRESSOR NO VOLTAGE IN THE ELECTRICAL USE A VOLTMETER TO WILL NOT START SOCKET CHECK THE VOLTAGE

THE ELECTRICAL CONDUCTOR USE AN OHMMETER, OR WIRES MAY BE CUT TO CHECK FOR CONTINUITY

DEFECTIVE ELECTRICAL REPLACE DEFECTIVE COMPONENTS SUCH AS: COMPONENTS THERMOSTAT, RELAY, THERMAL PROTECTOR, ETC. COMPRESSOR MOTOR HAS A MEASURE THE OHMIC WINDING OPEN OR SHORTED RESISTANCE OF THE MAIN AND AUXILIARY WINDINGS USING AN OHMMETER. COMPARE THEM WITH THE CORRECT VALUES

DIRTY CONDENSER, LACK OF AIR CLEAN CONDENSER AND FLOW ALLOW FOR AIR CIRCULATION

LOW VOLTAGE USE A VOLTAGE REGULATOR IF THE VOLTAGE IS LOWER THAN 100 VOLTS

COMPRESSOR IS STUCK CHANGE THE COMPRESSOR

THE TEMPERATURE THERMOSTAT DOES NOT DISCONNECT CHECK THE INSTALLATION OF THEIS TOO COLD THE CONDENSING UNIT THERMOSTAT. IF THE PROBLEM PERSISTS, CHANGE THE THERMOSTAT

THERMOSTAT’S AMBIENT SENSOR IS CORRECTLY FASTEN THE LOOSE OR INSTALLED IMPROPERLY THERMOSTAT’S AMBIENT SENSOR

THE TEMPERATURE CONDENSER IS DIRTY; LACK OF AIR CLEAN THE CONDENSER ANDIS NOT COLD ENOUGH FLOW ALLOW FOR AIR CIRCULATION

TROUBLESHOOTINGPossible causes and solutions

RM-4920

PROBLEM POSSIBLE CAUSE SOLUTION

THE TEMPERATURE THE REFRIGERATOR HAS BEEN THE UNIT MUST NOT BE NEARIS NOT COLD ENOUGH PLACED AT AN INADEQUATE STOVES, WALLS THAT ARE LOCATION EXPOSED TO THE SUN, OR PLACES THAT LACK SUFFICIENT AIR FLOW

THE REFRIGERATOR HAS BEEN USED THE SHELVES MUST NEVER BE IMPROPERLY COVERED WITH ANY TYPE OF PLASTIC OR OTHER MATERIAL THAT WILL BLOCK THE CIRCULATION OF COLD AIR WITHIN THE REFRIGERATOR

THE REFRIGERATOR HAS BEEN CHECK TO SEE IF CONDENSATION OVERCHARGED WITH THE OR ICE CRYSTALS HAVE FORMED REFRIGERANT GAS ON THE SUCTION LINE. IF SO, CHARGE WITH THE CORRECT AMOUNT OF GAS

THE REFRIGERANT GAS IS LEAKING FIND THE LOCATION WHERE THE GAS IS LEAKING IN ORDER TO SEAL IT OR REPLACE THE DEFECTIVE COMPONENT. CHANGE THE DRIER. PERFORM A GOOD VACUUM AND RECHARGE THE UNIT

THE EVAPORATOR AND/OR CHECK THE ELECTRICAL CONNECTIONS CONDENSER FANS AREN’T WORKING AND MAKE SURE THAT THE FAN BLADE ISN’T STUCK. REPLACE THE FAN MOTOR IF IT DOESN’T WORK

LOW VOLTAGE USE A VOLTAGE REGULATOR IF THE VOLTAGE IS LOWER THAN 100 VOLTS

ELECTRICAL SHOCKS WIRES OR ELECTRICAL COMPONENTS CHECK FOR APPROPRIATE INSULATION ON ARE IN DIRECT CONTACT WITH THE CONNECTIONS OF EACH ELECTRICAL METALLIC PARTS COMPONENT

NOISE THE REFRIGERATOR IS NOT CHECK IF THE NOISE GOES PROPERLY LEVELED AWAY AFTER YOU LEVEL THE REFRIGERATOR

THE CONDENSER IS NOT FASTENED WHILE THE COMPRESSOR IS WORKING, CORRECTLY. COPPER TUBINGS CHECK TO SEE IF METAL PARTS ARE IN ARE IN CONTACT WITH METAL CONTACT WITH ONE ANOTHER AND/OR IF THE SCREWS THAT FASTEN THE CONDENSER ARE TIGHTENED

THE EVAPORATOR AND/OR CHECK IF THE FANS ARE SECURELY CONDENSER FANS ARE LOOSE FASTENED. ALSO, CHECK IF THE FAN BLADES ARE LOOSE, BROKEN OR CROOKED. IF SO, CHANGE THE FAULTY BLADE

COMPRESSOR HAS AN INTERNAL IF THE NOISE PERSISTS AFTER NOISE ALL OTHER MEASURES HAVE BEEN TAKEN, IT MAY BE ORIGINATING FROM THE COMPRESSOR

21RM-49

PROBLEM POSSIBLE CAUSE SOLUTION

EXTREME CONDENSATION THERMOSTAT’S AMBIENT SENSOR IS CORRECTLY FASTEN THEINSIDE THE REFRIGERATOR LOOSE OR INSTALLED IMPROPERLY THERMOSTAT’S AMBIENT SENSOR

THE OUTSIDE ENVIRONMENT’S THIS TYPE OF OCCURRENCE IS RELATIVE HUMIDITY IS VERY HIGH CAUSED BY LOCAL CLIMATIC (OVER 75%) CONDITIONS AND NOT BY THE REFRIGERATED UNIT THE REFRIGERATOR DOOR WON’T CHECK THE DOOR AND/OR THE SHUT COMPLETELY MAGNETIC GASKET. ADJUST THE DOOR HINGES IF NEEDED; REPLACE THE GASKET IF BROKEN

THE REFRIGERATOR HAS BEEN THE UNIT MUST NOT BE NEAR PLACED AT AN INADEQUATE SOURCES THAT PRODUCE LOCATION TOO MUCH HEAT

NO ILLUMINATION THE LIGHT SWITCH IS IN “OFF” PRESS THE LIGHT SWITCH POSITION TO THE “ON” POSITION

FALSE CONTACT ON THE LIGHT INSPECT ALL CONNECTIONS SWITCH OR LED LIGHT SWITCH OR LED ARE DAMAGED REPLACE THE DAMAGED COMPONENT THE THERMOSTAT IS SET TO OPERATE SET THE THERMOSTAT IN NORMAL IN ENERGY SAVING MODE OPERATION MODE

RM-4922

REFRIGERATION SYSTEMComponent Description

COMPRESSOR:The compressor is a factory sealed unit located underneath (outside) the cooling cabinet. This pump is activated by a motor which draws low pressure vapor (refrigerant) from the evaporator. It then compresses the gas and forces it into the condenser at a high pressure.

STARTER RELAY:The starter relay is attached on one side of the compressor box. The compressor motor has two windings: one for starting and another for running. In order to provide for the necessary additional torque when the motor is first ignited, the starter relay connects the additional start-up windings. Af-ter the motor reaches its correct operating speed, the relay opens the ignition windings and the motor carries on with the operation windings.

THERMAL PROTECTOR:This protector is a thermo-sensible device attached to one side of the compressor’s box. In any given

situation, if the compressor overheats or if the voltage source varies drastically, the thermal protector opens, turning off the compressor. After the compressor cools down to a normal and safe working temperature, the thermal protector turns on the compressor.

CONDENSER:The condenser is located underneath (outside) the cooling cabinet in front of the compressor. Its receives hot, high pressure refrigerant gas from the compressor, and cools it down until it returns to liquid state.

CONDENSER FAN MOTOR:The condenser fan motor is located underneath the cooling cabinet. It is a ventilation device which forces the ambient air to flow over the condenser in order to cool down the refrigerant flowing inside it. The fan motor works only if the compressor is on.

EVAPORATOR CONDENSER

DRIERCAPILLARY

ACCUMULATOR

COMPRESSOR

DISCHARGE

EVAPORATORFAN MOTOR

CONDENSERFAN MOTOR

SUCTION

LEGEND

GASFLOW

23RM-49

REFRIGERATION SYSTEMComponent Description

EVAPORATOR:The evaporator is located inside the cooling cabinet. As the gas flows at a low pressure through the evaporator, it absorbs serpentine and removes the heat from inside the cabinet.

EVAPORATOR FAN MOTOR:This device produces the required circulation of air through the cooling cabinet as well as over the surface of the evaporator’s serpentine thermal exchange area. This fan motor runs continuously.

The evaporator and condenser serpentines have aluminum fins that help increase the surfaces for the thermal exchange in an efficient way.

CAPILLARY TUBE:It consist of several feet of tubing having a small inside diameter. It is a device used to control the amount od refrigerant that flows into the evaporator.

DRIER:The drier is located in between the condenser and the evaporator. It traps and removes moisture in the refrigeration system while allowing oil and refrigerant to flow freely.

ACCUMULATOR:The accumulator is located in between the evaporator and the compressor. It is a storage tank which receives refrigerant liquid from the evaporator and prevents it from flowing into the compressor.

ENERGY SAVING ELECTRONIC THERMOSTAT:The electronic thermostat is responsable for detecting temperature changes inside the cabinet. It starts the compressor whenever the cabinet temperature rises above the desired temperature. The compressor recirculates the refrigerant throughout the system, lowering the temperature inside the cooling compartment. When the temperature drops to the set point programmed in the thermostat, it turns off the compressor and a new cycle starts again.

This electronic thermostat contains a dispositive to save energy when the sales of the day are over. This dispositive is activated by pressing the “Energy Saving” button of the thermostat. When this button is pressed, the lights are turned off and the refrigerator starts operating in a warmer temperature setting, consuming less energy.

COOLING CABINET:This is the area where the goods are stored. It has been designed to allow for constant cold air circulation to flow through the goods.

RM-4924

THE REFRIGERATION CYCLE

1. As the temperature inside the cooling compartment increases, it is detected by the thermostats’ sensor. The thermostat then turns the compressor and the condenser motor on once the programmed temperature is reached.

2. The compressor recirculates the refrigerant throughout the system by drawing the refrigerant gas

at a low vapor pressure from the evaporator. Then it compresses the refrigerant and forces it into the condenser.

3. The condenser, with the help of its fan motor, removes the refrigerants’ heat as its flows through the condenser. The heat is then released to the outside environment. Consequently, the decrease in temperature will change the refrigerant from a gaseous to a liquid state.

4. The capillary tube regulates the amount of refrigerant that is discharged into the evaporator and expands it. This expansion causes the refrigerant temperature to decrease.

5. The evaporators' serpentine allows the refrigerant to absorb and remove heat from the cooling compartment.

6. The drop in temperature inside the cooling compartment is caused by the refrigerant’s continuous circulation through the system. This gas continuously absorbs the heat that exists inside the cooling compartment and expels it to the outside environment. When the temperature drops to its programmed set point, it is detected by the thermostat and it turns off the compressor and condenser motor.

1Axxxx-010